From Another Article: The compact design of LiquidPiston's lab engine currently tips the scales at 80 lbs for the 40-hp model. It would weigh less than 50 lbs i

From Another Article: The compact design of LiquidPiston's lab engine currently tips the scales at 80 lbs for the 40-hp model. It would weigh less than 50 lbs in production, the company claims, far less than a comparable 40-hp diesel that would tip the scale at around 400 lbs. [1] How on earth do you get a 400lb diesel engine that ONLY produces 40HP. First, when comparing engines for power production, you should really talk about kW production capability, not HP. Engine's HP is only half the story, you also have to talk about it's torque. I know rotary engines are a cool technology, but something about this smells like BS. [1]http://www.popularmechanics.com/cars/a8174/liquidpistons-hyper-efficient-engine-turning-the-rotary-inside-out-13817971/ http://www.popularmechanics.com/cars/a8174/liquidpistons-hyp... Edit: citation added